One of my friends seems to have... ego issues, I guess you could say. He constantly talks about sex, girls, things he does, how he treats girls, etc. It seems like he's constantly trying to portray this womanizer appearance to his friends, and sometimes even strangers (which gets very embarrassing to be around)
He takes it very far. I have a hard time distinguishing when he's lying and telling the truth. As of recently, I've decided to just assume everything he says is a lie (I'll explain this in a little bit) and up until now I've just shrugged it off and let him do whatever makes him feel better about himself, but lately it's starting to really bug me that he's flat out lying to me about everything.
We've been pretty good friends for about 8 years now, and this ego stuff started probably 4 or 5 years ago. The things he lies about are very intricate and he creates a whole back story to answer almost any question someone throws at him. He tells me stories (randomly, without me prompting anything) about how he has girls hit on him, and has sex with these seemingly random girls. More often than not he'll show me a picture of the girl. All of the pictures of the girls are so very obviously from porn sites or are models. Some even have writing in the bottom of a website. He also shows me the same pictures or the same girls multiple times (I imagine this is because he can't keep track of who he's told his stories to) and I never point it out, I just let him go on. His stories will often contradict eachother as well, or he'll tell me the same story multiple times, and things will change from time to time.
He's made more than one fake Facebook profiles of girls (again, using models' photos) and tried to talk to me, and to get his girlfriend jealous. It's so obvious they're fake that I went so far as to Google image search one of the pictures he used for his most recent "girl fling" that's getting his current girlfriend all riled up - a porn site came up with the same exact picture he used for the Facebook account. I haven't told his girlfriend, as it's not my place to cause drama with them. But he treats her so terribly, and uses this fake Facebook girl to get his GF extremely mad, upset, and jealous. It's flat out wrong, and I think it's got to be a sign of some sort of mental disorder, as he's done this for years. A couple years ago he made a fake profile of his "old friend" who he, of course, hooked up with multiple times (I got the details on that one as well) and called me one night saying she died while driving to come see him, and how bad he felt, etc. I looked up her picture that was on her profile, and again, it was a model/porn star. He's creating these fake people to get attention and to get people to like him.
I'm so sick of him lying to me, and I'm genuinely concerned about his mental health. I've caught him off guard a few times by asking very detailed questions about his stories. The most recent one was how he killed someone by defending himself after getting attacked by some guy with a weapon. I asked why it wasn't on the news, and he said he didn't know but that he wouldn't want it on the news because it's his business only. Then he said the officer on the scene said that if he hadn't killed the man, the amount of drugs in his system would have (he told me the story just hours after it happened) - I asked how they got drug screens back that fast, and how he would have known right away after it happened. It took him a while to respond to that one, kind of threw him off, and he said he didn't know. I happen to work in a medical lab and know just how long it takes to do drug and tox screens, even for investigations such as this, and it would not have gotten back that fast. He ended up changing the subject and got awkward and a little mad.
My question is this - is this something to be seriously concerned about, and something that should be addressed? Should I talk to him about how I don't like being deceived and lied to? I'm mostly concerned that this is a sign of a serious mental disorder, and that he makes himself believe these stories he makes up.